Additional cardiovascular fitness when progressing from moderate- to high-intensity exercise training in previously trained breast cancer survivors.

Purpose: Cardiovascular disease, often secondary to chemotherapy, is the leading cause of death in BC survivors. Increased aerobic capacity improves post-rehabilitation survival; however, many cancer rehabilitation programs are limited to lower intensity training. High-intensity interval training (HIIT) is associated with the largest improvements in aerobic capacity; therefore, this study aimed to determine whether HIIT would cause a greater increase in VOpeak than continuous moderate-intensity (MICT) exercise in previously trained BC survivors.